Brake mechanism.



O. S. BLUE,

BRAKE MECHANISM,

APPLICATION FILED JULY 6, 1912.

1,123, l7lz- Patented. Jan.5,1915

ilitia UNITED STATES PATENT ()FFIGEi Gent's. BLHQE, 03,CONVEBSEJAZQIANA, AssIGNoR or ONE-HAL}? TO WILLIAM a. aicnamnn, orconvzsnsn, INDIANA.

BRAKE MECHANISM Specification of Letters Patent.

Patented Jan. 5, i315.

Application filed July 6, 1912- Serial No. 708,077.

Brake Mechanism for Automobiles, of

which the following is a specification.

T he present invention relates to improvem nts in brake mechanisms forautomobiles, the primary object of the invention being the provision ofa novel form. of brake mechanism, in which the drum is connected to therear wheels of an automobile and providcd with a band brake deviceconcentric thereof for producing the braking eii'ect upon the interiorportion of a sprocket wheel which constitutes the main drive for therear wheels.

\Vith the foregoing and other objects in view which ivill appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention can be made within the scope of what isclaimed without departing from the spirit of the invention.

In the drawings Figure l is a view in elevation showing a chain drive, asection being taken longitudinally through the chain case and the outer.brake and sprocket carrying drum showing the braking mechanism in normalcondition. Fig. 2 is a section taken on line 19-4 of Fig. 1 through thecomplete case. Figs, 3 and 4 aredetail views of the forward end of thechain case.

Referring to the drawings, the numeral 1 designates the stationary rearaxle, While 9 designates a counter shaft which is adapted to be drivenfrom a prime mover, as for instance, an explosive engine (not shown).

Removably keyed upon the respective ends o the shaft 9 are the smallsprockets 14 over which are trained the respective chains 15, therebeing one chain 15 to each chain casing 19, the detail structui e ofwhich is clearly shown. This chain 15 is trained over the large sprocket16 which is in the nature of a band and is journaled for rotation withinthe removable ring 18 carried by the outer wall of the casing 19, thesaid band being connected by means of the bolts 27 to a rear Wheel (notshown), said rear wheel being journaled upon the respective ends of theaxle 1 so to properly carry and position the sprocket 16. The frame 21is provided with the central aperture about the axle, clearly shown inFig. 1, with its pivotal pin 23 for the brake band 29, the pins 24looking the cap :25 rigidly to the frame 21 and the cap 25 to the casing19. The two springs 20, are

employed to centralize the brake band 29 in,

the drum, While the two springs 20 are to assist in contracting the ends30 of the band :29. It will also be noted that the band29 has a slot 23in its web, thus providing a means to permit the band'to locate itselfcentrally under all conditions. In the free end of the frame 21 mountedthe two arms 32 carrying in their respective terminals, the rollers 31which are disposed to abut the lugs 30 at the terminals of'the bandbrake :29, whose lugs 28 are pivotally connected to the frame 21. Inorder to actuate the arms so as o permit of the separation orcontraction of the terminals 30 of the band 29, these arms 32 are keyedupon the shaft 33 which is operated by a rod and lever device (notshown).

In order to provide a means by which the chain slackening/ or tighteningmay be adjusted and also to permit of the interchange of the sprockets1% to increase or decrease the gear of the automobile, the parallelgrooves 37 and slots 38 are provided for the reception of the tie bolts39, which connect the disk 40 to the casing 19.

Packing rings a are disposed, as shown in ig. 2 to prevent dust fromentering the casing.

That is claimed is:

The combination with a stationary rear axle, of a brake mechanism,including a member fixedly connected to the axle and having terminalsprojecting in opposite directions, both terminals being recessed, abrake drum for connection to a rear Wheel and incasing'said member, anopen ring disposed within the brake drum and having a plurality ofinwardly projecting lugs pivotally connected to one recessed end of themember, two springs connected to the open ring and to the axle carriedmember, the spaced terminals of the open ring being disposed one uponeach side of the opposite recessed end of the member, the faces of thering, the normal tension of the ring being to m T8 the spaced terminalstoward 'each other, and an osciilatory'j means disposed betxz'egnthe.ermmals of the open ring and mounted in the axle,- carrying 10 memberfor nmving the terminals away 'fmrn each other and into engagement withthe brake @rum.

In. testimonythat I claim the foregoing as my own, I have hereto aflxxedmy signature in the presence of two Witnesses.

CARY s. BLUE.

Witnesseg:

CICERO L. Mum-m, LEROY 0. Asxouzi

